on because financials are a significant sector in the overall market, and they have the pulse on the economy, in terms of housing, mortgages, hiring, and we watch that trading activity in the last quarter. >> susie: and we'll have all of those numbers tomorrow. that's "nightly business report" for tonight, tuesday, january 15. have a great evening, everyone. see you tomorrow, tom. have a great evening, everyone. and you, too, tom. >> tom: good night, susie. we'll see you online at www.nbr.com and back here tomorrow night. captioning sponsored by wpbt captioned by media access group at wgbh access.wgbh.org >>> tonight on "spark" -- we meet artists who fuse genres, cultures and modes of expression in ways that are surprising and provocative. in our first story, we'll check out the growing phenomenon of muslim hip-hop. >> home of the brave, land of the free, now this i still got to see. it's not what mainstream muslims really talk about. >> they're realizing that their kids are being influenced by rap music more than anything else, including them. >>> then -- we'll visit the west marin studio o